Support for additional Docker commands. For the list of Docker commands that this release supports, see Supported Docker Commands in Developing Container Applications with vSphere Integrated Containers. (Link)

You can also use vic-machine upgrade to upgrade the Virtual Container Hosts. From the Upgrade Guide:

When you upgrade a running VCH, the VCH goes temporarily offline, but container workloads continue as normal during the upgrade process. Upgrading a VCH does not affect any mapped container networks that you defined by setting the vic-machine create --container-network option. The following operations are not available during upgrade:

You cannot access container logs

You cannot attach to a container

NAT based port forwarding is unavailable

IMPORTANT: Upgrading a VCH does not upgrade any existing container VMs that the VCH manages. For container VMs to boot from the latest version of bootstrap.iso, container developers must recreate them.

With the release of vSAN 6.6 and vCenter 6.5d, you might want to test out VIC 1.1 in your test/lab environment and leverage it to build a great platform for your development teams. Speaking of compatibility:

There is also a new demo video that shows the product & the updated User Interfaces in more detail. Check out the video here: